Phytoremediation and Biochar Application as an Amendment

Evangelou, Michael W.H.; Fellet, Guido; Ji, Rong; Schulin, Rainer

doi:10.1007/978-3-319-10395-2_17

Cited by 8 publications

(10 citation statements)

References 94 publications

(114 reference statements)

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“…El biochar de lodos residuales (BLR) obtenido presentó un pH cercano a la neutralidad (pH = 6.33 a 7.33) y no fue afectado signif icativamente por los tiempos de pirólisis (Cuadro 2), conf irmando que las bajas temperaturas del proceso de pirólisis (300-500 o C) generan biochars de pH neutro a ácido (Agraf ioti et al, 2013;Yuan et al, 2015); en este proceso, la oxidación del C genera grupos carboxilos que disminuyen el pH (Evangelou et al, 2015). De acuerdo con sus valores de pH, el biochar obtenido podría recomendarse para su disposición en suelos con pH neutro o ligeramente Cuadro 1.…”

Section: Resultados Y Discusión Propiedades Físico-químicas Del Biochunclassified

“…El tratamiento de pirólisis a lodos residuales para transformarlos en biochar permite conservar algunas de sus características con valor agronómico importante, tales como: contenido de fósforo, nitrógeno, materiales orgánicos y otros nutrientes disponibles para las plantas (Lundin et al, 2004), a la vez que se reduce el contenido de patógenos . Los materiales pirolizados se caracterizan por su alta superf icie específ ica, porosidad y retención de agua, además de una lenta descomposición que reduce la liberación de CO 2 a la atmósfera y ayuda a la captura de carbono en los suelos (Lehmann y Joseph, 2015;Conte, 2014;Evangelou et al, 2015). Sin embargo, los biochars, especialmente aquellos derivados de lodos residuales (BLR), pueden contener concentraciones elevadas de metales y compuestos orgánicos tóxicos, como los hidrocarburos policíclicos aromáticos PAH, fenoles, dioxinas y furanos que representan un riesgo ambiental (Agraf ioti et al, 2013;Escalante-Rebolledo et al, 2016).…”

Section: Introductionunclassified

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Caracterización física y química de biochar de lodos residuales.

Machuca

Soriano

González

et al. 2019

Terra

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Pyrolysis treatment of sewage sludge to generate biochar is one of the current alternatives for environmental management of this waste. The treatment transforms sewage sludge into biochar, conserves some of the characteristics that give it an important agronomic value and reduces its pathogen content. The objective of this study was to analyze the potential use of the sewage sludge biochar obtained from the wastewater treatment plant (WWTP) of Morelia, Michoacán, México, as an agricultural soil improver considering the physical-chemical properties of the material and its content of nutrients and heavy metals as indicators. The sewage sludge was subjected to pyrolysis (SSB) in an experimental scale reactor that uses solar energy, with six residence times and temperature of 280 to 355 oC. The parameters analyzed were: pH EC, OM, Cu, Mn, Zn, Fe available (DTPA and EDTA), elemental composition (C, N, O, Ca, Mg, Na, K, P, S, Cl, Si, Al, Fe, Mn, Cu, Zn, Ti, Ni, Cr, Cd and Pb). The EC of the SSB obtained was from 592 to 5240 μS cm‑1, pH = 6.33 to 7.02, OM = 3.8 to 5.6%, high contents of C, N, P (31 to 38%, 6.5 to 7.7% and 37.7 to 48.8 g kg‑1, respectively), low Na/Ca ratio and a low content of total and available heavy metals. The properties of the SSB obtained indicate that it can be used as an agricultural soil improver since it is a material with high nutrient content and low environmental risk in terms of its low heavy metal content. These results should be complemented with studies on the response of plants to BLR, monitoring of physical-chemical conditions and analysis of organic contaminants in soil and water where this material is applied.

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Section: Resultados Y Discusión Propiedades Físico-químicas Del Biochunclassified

Section: Introductionunclassified

Caracterización física y química de biochar de lodos residuales.

Machuca

Soriano

González

et al. 2019

Terra

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“…Therefore, uptakes of the entrapped pesticides by organisms become limited and consequently their toxicity reduces leading to poor pest control efficiency of pesticides in biochar-amended soils (Mesa and Spokas 2011;Kookana et al 2011;Wang et al 2015). It can affect the pest management and demands a higher pesticide application rate which directly enhances the production costs and introduces a probable new risk in the environment (Nag et al 2011;Graber et al 2012;Evangelou et al 2015). Kookana et al (2011) mentioned the possibility of faster evolution of herbicide-resistant weeds after biochar amendment.…”

Section: Drawbacks Of Biochar Applicationmentioning

confidence: 97%

“…Moreover, biochar is increasingly recognized as relatively low-cost and environmentally friendly sorbent effective in sorption and stabilization of other substances including organic and inorganic pollutants (Chen et al 2008a;Uchimiya et al 2011;Zhao et al 2013;Verheijen et al 2014) and greenhouse and landfill gases such as methane and nitrous oxide (Nartey and Zhao 2014;Reddy et al 2014). This virtue is because of its physicochemical properties such as great surface area, heterogeneous surface properties, micro-porous structure, the presence of poly aromatic carbon compositions, high cation exchange capacity and resistance to decomposition and mineralization (Yu et al 2009;Kookana 2010;Evangelou et al 2015). Based on Sohi et al (2010) the carboxyl and phenolic functional groups present on biochar surfaces area are effective in elevation of soil CEC and therefore its material retention capacity.…”

Section: Biocharmentioning

confidence: 98%

“…The physicochemical properties of biochar are depended on the original organic material and the pyrolysis conditions under which the biochar is manufactured (Evangelou et al 2015). Through pyrolysis, a thermochemical conversion technology, biomass feedstock is heated at relatively low temperatures (<700°C) in the absence or limited supply of oxygen and readily transformed into biochar, bio-oil, and syngas as bio-energy by-products (Song and Guo 2012).…”

Section: Biocharmentioning

confidence: 99%

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Biochar efficiency in pesticides sorption as a function of production variables—a review

Yavari

Malakahmad

Sapari

2015

Environ Sci Pollut Res

110

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Biochar is a stabilized, carbon-rich by-product derived from pyrolysis of biomass. Recently, biochar has received extensive attentions because of its multi-functionality for agricultural and environmental applications. Biochar can contribute to sequestration of atmosphere carbon, improvement of soils quality, and mitigation of environmental contaminations. The capability of biochar for specific application is determined by its properties which are predominantly controlled by source material and pyrolysis route variables. The biochar sorption potential is a function of its surface area, pores volume, ash contents, and functional groups. The impacts of each production factors on these characteristics of biochar need to be well-understood to design efficient biochars for pesticides removal. The effects of biomass type on biochar sorptive properties are determined by relative amounts of its lingo-cellulosic compounds, minerals content, particles size, and structure. The highest treatment temperature is the most effective pyrolysis factor in the determination of biochar sorption behavior. The expansion of micro-porosity and surface area and also increase of biochar organic carbon content and hydrophobicity mostly happen by pyrolysis peak temperature rise. These changes make biochar suitable for immobilization of organic contaminants. Heating rate, gas pressure, and reaction retention time after the pyrolysis temperatures are sequentially important pyrolysis variables effective on biochar sorptive properties. This review compiles the available knowledge about the impacts of production variables on biochars sorptive properties and discusses the aging process as the main factor in post-pyrolysis alterations of biochars sorption capacity. The drawbacks of biochar application in the environment are summarized as well in the last section.

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Phytoremediation of Soils Contaminated with Heavy Metals: Techniques and Strategies

Biswal

2022

Advances in Bioremediation and Phytoremediation for Sustainable Soil Management

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Phytoremediation and Biochar Application as an Amendment

Cited by 8 publications

References 94 publications

Caracterización física y química de biochar de lodos residuales.

Caracterización física y química de biochar de lodos residuales.

Biochar efficiency in pesticides sorption as a function of production variables—a review

Phytoremediation of Soils Contaminated with Heavy Metals: Techniques and Strategies

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